2020 RAM CHASSIS CAB technical specifications

402TECHNICAL SPECIFICATIONS
FUEL REQUIREMENTS – DIESEL ENGINE
Use good quality diesel fuel from a reputable
supplier in your vehicle. Federal law requires
that you must fuel this vehicle with Ultra Low
Sulfur Highway Diesel fuel (15 ppm Sulfur
maximum) and prohibits the use of Low Sulfur
Highway Diesel fuel (500 ppm Sulfur maximum)
to avoid damage to the emissions control
system.
For most year-round service, No. 2 diesel fuel
meeting ASTM (formerly known as the American
Society for Testing and Materials) specification
D-975 Grade S15 will provide good perfor -
mance. If the vehicle is exposed to extreme cold
(below 20°F or -7°C), or is required to operate
at colder-than-normal conditions for prolonged
periods, use climatized No. 2 diesel fuel or
dilute the No. 2 diesel fuel with 50% No. 1 diesel
fuel. This will provide better protection from fuel
gelling or wax-plugging of the fuel filters. Diesel fuel is seldom completely free of water.
To prevent fuel system trouble, drain the accu
-
mulated water from the fuel/water separator
using the fuel/water separator drain provided
on both fuel filters. If you buy good quality fuel
and follow the cold weather advice above, fuel
conditioners should not be required in your
vehicle. If available in your area, a high cetane
“premium” diesel fuel may offer improved
cold-starting and warm-up performance.
Fuel Specifications
The Cummins® Turbo Diesel engine has been
developed to take advantage of the high energy
content and generally lower cost No. 2 Ultra Low
Sulfur diesel fuel or No. 2 Ultra Low Sulfur clima-
tized diesel fuels. Experience has shown that it
also operates on No. 1 Ultra Low Sulfur diesel
fuels or other fuels within specification. NOTE:
If you accidentally fill the fuel tank with gaso
-
line on your diesel vehicle, Do not start the
vehicle. If you restart your vehicle you risk
damaging the engine and fuel system. Please
call an authorized dealer for service.
A maximum blend of 5% biodiesel meeting
ASTM specification D-975 may be used with
your Cummins diesel engine. (Chassis Cab
models not configured with B20 capability.)
A maximum blend of 20% biodiesel meeting
ASTM specification D-7467 may be used with
your Cummins diesel engine. (Pickup models
and Chassis Cab models configured with B20
Capability.)
In addition, commercially available fuel addi -
tives are not necessary for the proper opera -
tion of your Cummins diesel engine.
However, if seasonably adjusted fuel is not
available and you are operating below 20°F
(-6°C), Mopar Premium Diesel Fuel Treat -
ment (or equivalent) may be beneficial to
avoid fuel gelling.
No. 1 Ultra Low Sulfur diesel fuel should only
be used where extended arctic conditions
(0°F or -18°C) exist.
WARNING!
Do not use alcohol or gasoline as a fuel
blending agent. They can be unstable under
certain conditions and hazardous or
explosive when mixed with diesel fuel.
CAUTION!
If the “Water in Fuel Indicator Light” remains
on, DO NOT START engine before you drain
the water from the fuel filter(s) to avoid
engine damage. Refer to “Draining Fuel/
Water Separator Filter” in “Servicing And
Maintenance” for further information.

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TECHNICAL SPECIFICATIONS403
Biodiesel Fuel Requirements
Chassis Cab Models
A maximum blend of 5% biodiesel meeting
ASTM specification D975 may be used with
your Cummins diesel engine. If operation with
biodiesel blends greater than 5% but not
greater than 20% (B6-B20) is desired, the truck
must first be reconfigured by an authorized
Ram dealer and the provisions in the following
section must be adhered to.
Pickup Models And Chassis Cab Models
Ordered With B20 Option
Your vehicle has been validated and approved
for the use of biodiesel in blends up to 20%
(B20) provided that you comply with the require -
ments outlined below. It is important that you
understand and comply with these require -
ments. Failure to comply with Oil Change
requirements for vehicles operating on
biodiesel blends up to B20 will result in prema -
ture engine wear. Such wear is not covered by
the New Vehicle Limited Warranty. Biodiesel is a fuel produced from renewable
resources typically derived from animal fat,
rapeseed oil (Rapeseed Methyl Ester (RME)
base), or soybean oil (Soy Methyl Ester (SME or
SOME) base). Biodiesel fuel has inherent limita-
tions which require that you understand and
adhere to the following requirements if you use
blends of biodiesel greater then 5% but not
greater than 20% (B6-B20). There are no
unique restrictions for the use of B5. Use of
blends greater than 20% is not approved. Use of
blends greater than 20% can result in engine
damage. Such damage is not covered by the
New Vehicle Limited Warranty.Fuel Quality — Must Comply With ASTM
Standards
The quality of biodiesel fuel may vary widely.
Only fuel produced by a BQ9000 supplier to the
following specifications may be blended to
meet biodiesel blend (B6–B20) fuel meeting
ASTM specification D-7467:
Pretrodiesel fuel meeting ASTM specification
D-975 and biodiesel fuel (B100) meeting
ASTM specification D-6751.
Fuel Oxidation Stability — Must Use Fuel
Within Six Months Of Manufacture
Biodiesel fuel has poor oxidation stability which
can result in long term storage problems. Fuel
produced to approved ASTM standards, if
stored properly, provides for protection against
fuel oxidation for up to six months.
Fuel Water Separation — Must Use Mopar/
Cummins Approved Fuel Filter Elements
You must use Mopar/Cummins approved fuel
filter elements in both your engine mounted
filter and frame mounted filter.
Biodiesel fuel has a natural affinity to water and
water accelerates microbial growth. Your
Mopar/Cummins filtration system is designed
to provide adequate fuel water separation capa-
bilities.
Bio-Diesel Fuel Properties — Low Ambient
Temperatures
Biodiesel fuel may gel or solidify at low ambient
temperatures, which may pose problems for
both storage and operation. Precautions can be
necessary at low ambient temperatures, such
as storing the fuel in a heated building or a
heated storage tank, or using cold temperature
additives.
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404TECHNICAL SPECIFICATIONS
Fuel In Oil Dilution — Must Adhere To
Required Oil Change Interval
Fuel dilution of lubricating oil has been
observed with the use of biodiesel fuel. Fuel in
oil must not exceed 5%. To ensure this limit is
met your oil change interval must be main -
tained to the following schedule:
Ram 3500/4500/5500 Chassis Cab
— 12,500 Miles (20,000 km)*
(*unless otherwise notified with a oil service
message)
VEHICLE SPECIFCATIONS
NOTE:
A chime will sound if the vehicle speed exceeds
75 mph (120 km/h).
CAUTION!
Under no circumstances should oil change
intervals exceed 12,500 miles
(20,000 km) if operation occurs with
greater than 5% biodiesel blends. Oil
change intervals should not exceed
6 months in either case. Failure to comply
with these Oil Change requirements for
vehicles operating on biodiesel blends up
to B20 may result in premature engine
wear. Such wear is not covered by the New
Vehicle Limited Warranty.
B20 Biodiesel capable: The engine may
suffer severe damage if operated with
concentrations of Biodiesel higher than
20%.
Engine 6.4L
Power340 kW @ 6,000 RPM
Torque 650 Nm @ 4,300 RPM
Maximum Vehicle
Speed Consult your
Salesperson

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TECHNICAL SPECIFICATIONS405
FLUID CAPACITIES — GAS ENGINE
FLUID CAPACITIES — DIESEL ENGINE
USMetric
Fuel (Approximate)
Standard Rear Tank 52 Gallons197 Liters
Optional Midship Tank 22 Gallons83 Liters
Engine Oil With Filter
6.4L Engine (We recommend you use SAE 0W-40, Synthetic API Certified) 7 Quarts6.6 Liters
Cooling System
6.4L Engine (We recommend you use Mopar Antifreeze/Coolant 10 Year/150,000 Mile
Formula). 16.6 Quarts
15.7 Liters
US Metric
Fuel (Approximate)
Standard Rear Tank 52 Gallons197 Liters
Optional Midship Tank 22 Gallons83 Liters
Diesel Exhaust Fluid Tank
(Approximate) 9 Gallons
34 Liters
Engine Oil With Filter
6.7L Turbo Diesel Engine 12 Quarts11.4 Liters8

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406TECHNICAL SPECIFICATIONS
Cooling System
6.7L Turbo Diesel Engine 3500 with
AS69RC (Mopar Engine Coolant/
Antifreeze 10 Year/150,000 Mile
Formula) 22.5 Quarts
21.3 Liters
6.7L Turbo Diesel Engine Chassis
Cab 3500/4500 with AS69RC
(Mopar Engine Coolant/Antifreeze
10 Year/150,000 Mile Formula) 22.3 Quarts
21.1 Liters
6.7L Turbo Diesel Engine Chassis
Cab 5500 with AS69RC (Mopar
Engine Coolant/Antifreeze 10 Year/
150,000 Mile Formula) 22.8 Quarts
21.6 Liters
USMetric

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TECHNICAL SPECIFICATIONS407
FLUIDS AND LUBRICANTS — GAS ENGINE
Engine
Component Fluid, Lubricant, or Genuine Part
Engine Coolant We recommend you use Mopar Antifreeze/Coolant 10–Year/150,000
Mile Formula OAT (Organic Additive Technology).
Engine Oil – 6.4L Engine For best performance and maximum protection under all types of
operating conditions, the manufacturer only recommends full synthetic
engine oils that meet the American Petroleum Institute (API) categories of
SN. The manufacturer recommends the use of Pennzoil Ultra 0W-40 or
equivalent Mopar engine oil meeting the requirements of FCA Material
Standard MS-12633 for use in all operating temperatures.
Engine Oil Filter – 6.4L Engine We recommend you use Mopar Engine Oil Filters.
Spark Plugs – 6.4L Engine We recommend you use Mopar Spark Plugs.
Fuel Selection – 6.4L Engine 89 Octane Recommended - 87 Octane Acceptable (R+M)/2 Method,
0-15% Ethanol (Do not use E-85).
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408TECHNICAL SPECIFICATIONS
(Continued)
(Continued)
CAUTION!
Mixing of engine coolant (antifreeze) other
than specified Organic Additive Technology
(OAT) engine coolant (antifreeze), may
result in engine damage and may decrease
corrosion protection. Organic Additive Tech -
nology (OAT) engine coolant is different and
should not be mixed with Hybrid Organic
Additive Technology (HOAT) engine coolant
(antifreeze) or any “globally compatible”
coolant (antifreeze). If a non-OAT engine
coolant (antifreeze) is introduced into the
cooling system in an emergency, the
cooling system will need to be drained,
flushed, and refilled with fresh OAT coolant
(conforming to MS.90032), by an autho -
rized dealer as soon as possible.Do not use water alone or alcohol-based
engine coolant (antifreeze) products. Do
not use additional rust inhibitors or antirust
products, as they may not be compatible
with the radiator engine coolant and may
plug the radiator.
CAUTION! (Continued)
This vehicle has not been designed for use
with propylene glycol-based engine coolant
(antifreeze). Use of propylene glycol-based
engine coolant (antifreeze) is not recom -
mended.
CAUTION! (Continued)

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TECHNICAL SPECIFICATIONS409
Chassis
Component Fluid, Lubricant, or Genuine Part
Automatic Transmission – Eight-Speed Use only Mopar ZF 8&9 Speed ATF Automatic Transmission Fluid,
orequivalent. Failure to use the correct fluid may affect the function
orperformance of your transmission.
Automatic Transmission – Six-Speed Use only Mopar ASRC Automatic Transmission Fluid or equivalent. Failure
to use the proper fluid may affect the function or performance of your
transmission.
Transfer Case We recommend you use Mopar Transfer Case Lubricant for Borg Warner
44-44 and 44-45.
Front and Rear Axle Fluid (3500) We recommend you use SAE 75W-85 HD Ram GL-5 Synthetic Axle
Lubricant in 9.25 Front & 11.5 Rear Axles. Use Mopar Synthetic Gear
Lubricant SAE 75W-140 (MS-8985) in 12.0 Rear axles. Limited slip
additive is required for limited slip axles
Front and Rear Axle Fluid (4500/5500) We recommend you use SAE 75W-85 HD Ram GL-5 Synthetic Axle
Lubricant. Limited slip additive is required for limited slip axles
Brake Master Cylinder We recommend you use Mopar DOT 3 and SAE J1703.
Power Steering Reservoir We recommend you use Mopar Power Steering Fluid +4, Mopar ATF+4
Automatic Transmission Fluid.
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